Brake Disc — Nissan Gravite
Category: Brakes | Severity: high | Cost: ₹3,000–₹9,000
What is Brake Disc?
Brake discs (rotors) are circular metal components attached to the wheel hub that provide a friction surface for brake pads to slow down the vehicle.
How Brake Disc Works
When the brake pedal is pressed, caliper pistons push pads against the rotating disc, converting kinetic energy into heat through friction.
Why is Brake Disc Important?
Critical for stopping power, heat dissipation, and consistent braking performance.
Common Problems
- Warping
- Scoring
- Overheating
- Rust formation
Symptoms
- Steering vibration while braking
- Squealing noise
- Reduced braking efficiency
Causes of Failure
- Excess heat
- Aggressive braking
- Poor quality pads
- Water exposure
Impact on Car Performance
Warped discs can increase braking distance by 20–30% and reduce stability.
DIY Fix Guide — Step by Step
- Inspect disc surface visually
- Check for grooves or warping
- Measure thickness
- Replace if below limit
Maintenance Tips
- Avoid hard braking
- Use quality pads
- Inspect during service
Replacement Cost in India
Estimated range: ₹3,000 – ₹9,000
Where to Buy Online
When to Replace Brake Disc
Replace every 50,000–70,000 km or when thickness is below manufacturer limit.